Revolving portable elevator-lock.



W. E. BOEHCK 81 H. S. GERIVIOND, JR. REVOLVING PORTABLE ELEVATOR LOCK.

APPLICATION man AUG. I0, 1916.

1 @figfi, Patented Jan. 30, 1917.

UN D WIPES lPThl WILLIAM: EDVTARD BOEHCK, OF JERSEY CITY. AND HENRYSHELDEN GERMOND, JR.,

OF BAYONNE, NEW JERSEY, ASSIGNORS TO NEW' YORK REVOLVING PORTABLE ELE-VATOR COMPANY, OF JERSEY GI'IY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

REVOLVING PORTABLE ELEVATOR-LOCK.

Specification of Letters Patent.

Patented Jan. so, 191?.

Application filed August 10, 1916. Serial No. 114,177.

To all whom it may concern:

Be it known that we, WILLIAM EDWARD BOEI-ICK, a subject of the Emperorof Germany, residing at Jersey City, in the county of Hudson and Stateof New Jersey, wand HENRY SHELDEN GERMOND, Jr., a citizen of the UnitedStates of America, residing at Bayonne, in the county of Hudson andState of New Jersey, have invented certain new and useful Improvementsin Revolving Portable Elevator-Locks, of which the following is aspecification, reference being had to the accompanying drawings.

This invention relates to improvements in revolving portable elevatorsor tiering ma.- chines and particularly to improvements in mechanism forlocking the rotatablymounted elevator-base in adjusted position upon thetruck; and an object of this invention is to provide a locking mechanismof this character which will be simple in construction, comparativelycheap in manufacture and eiiicient and durable in operation and use.

Another object of this invention is to provide a locking mechanism whichmay be readily and easily operated by the foot of the workman.

In the drawings illustrating the principle of this invention and thebest mode now known to us of applying that principle, Figure 1 is a sideelevation of so much of a portable elevator as is necessary toillustrate this invention; Fig. 2 is an elevation looking in thedirection of the arrow A; and Fig. 3 is a plan, the load-carryingplatform being omitted for sake of clearness.

The body a of the truck 6 is supported upon a pair of rear wheels 0 anda front or steering wheel cl rotatably mounted in the fork e, which isfree to turn in the bearing 7 after the manner of a caster-wheelmounting. From the elevator-base g, there rises a pair of standards h,within which there travels up and down a load-carrying platform 2' thatis controlled by the hoisting cable 7'. The elevator-base g is fastenedto the body a of the truck I) by means of a king-pin or king-bolt isupon which the elevator-base 9 turns as a pivot.

The foregoing parts are all old in this art and in the relation hereinshown and described.

In order to lock the elevator-base 9 upon the truck 6, a locking screwor is adjustably mounted in the elevator-base 9 so that its lower endmay be forced against the top of the body a of the truck I). It will befound that there is a certain amount of looseness or lost motion betweenthe kingbolt 70, the truck-body a and the elevatorbase 9; and, byturning the screw on in the proper direction, these parts may betightened relatively to one another and the elevator-base g fixed inposition upon the truck-body a. The head 22 of the lockingscrew m issomewhat cup-shaped and there is formed in its rim a series of cuts orre cesses a of such a shape and size as to receive the foot of theworkman, who can, while using both his hands in manipulating theelevator, tighten or loosen the lockingscrew on with his foot.

IVe claim:

1. A revolving portable elevator including a truck; an elevatonbasepivotally mounted thereon; a load-carrying platform carried by saidelevator-base; and a locking screw mounted in said elevator-base andarranged to bear frictionally against said truck and thereby to lock thesame and said elevator-base together.

2. A. revolving portable elevator including a truck; an elevator-basepivotally mounted thereon; a load-carrying platform carried by saidelevator-base; and a locking screw mounted in said elevator-base andarranged to bear frictionally against said truck and thereby to lock thesame and said elevator-base together; said locking screw being formedwith a head shaped to receive the foot of the workman for turning saidscrew.

Signed at Jersey City, in the county of Hudson and State'of New Jersey,this 8th day of August, A. D., 1916, in the presence of the twoundersigned witnesses.

WILLIAM EDWARD BOEHCK. HENRY SHELDEN GERMOND, JR. Witnesses:

HENRY HOLTZMANN, JAMns A. DRISCOLL.

topics of this patent may be obtained for five cents each. by addressingthe Commissioner of Patents, Washington, D. G.

